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Ion generation apparatus and electric equipment using the same

a technology of ion generation apparatus and electric equipment, applied in the direction of electrographic process apparatus, instruments, corona discharge, etc., can solve problems such as substrate warpag

Active Publication Date: 2013-10-15
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This design ensures stable generation of positive and negative ions by maintaining electrode alignment despite temperature changes, resulting in consistent ion production and improved ion concentration ratios.

Problems solved by technology

However, the conventional ion generation apparatus has a problem that, due to a large difference in thermal expansion coefficient between substrate 51 and induction electrode 52, a difference in length between substrate 51 and induction electrode 52 is caused with changes in temperature, resulting in warpage of substrate 51.

Method used

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  • Ion generation apparatus and electric equipment using the same
  • Ion generation apparatus and electric equipment using the same
  • Ion generation apparatus and electric equipment using the same

Examples

Experimental program
Comparison scheme
Effect test

concrete example 1

[0053]As Concrete Example 1, an ion generation apparatus with an interval between the tip ends of needle electrodes 4 and 5 set to 19 mm was produced. FIG. 4 is a view showing the relationship between the number of discharges (times / second) and an ion concentration ratio (%) in the ion generation apparatus. Here, an ion concentration obtained when the number of discharges was 480 (times / second) was represented as 100%. The number of discharges was changed in a range of 60 to 660 (times / second) by changing the resistance value of resistance element 21 of FIG. 3. The ion generation apparatus was placed in the air with a prescribed wind speed, and the ion concentration was measured using an ion counter placed at a position 25 centimeters downstream of the ion generation apparatus.

[0054]In the range of 60 to 480 (times / second), the ion concentration was increased with an increase in the number of discharges. In the range of equal to or greater than 480 (times / second), however, there was...

concrete example 2

[0055]As Concrete Example 2, an ion generation apparatus with an interval between the tip ends of needle electrodes 4 and 5 set to 38 mm was produced. FIG. 5 is a view showing the relationship between the number of discharges (times / second) and an input current (mA) in the ion generation apparatus. The number of discharges was changed in a range of 60 to 600 (times / second) by changing the resistance value of resistance element 21 of FIG. 3. The input current (mA) is a DC current flowing from the DC power supply to power supply terminal T1 of FIG. 3. As can be seen from FIG. 5, the input current was increased substantially in proportion to the number of discharges.

[0056]FIG. 6 is a view showing the relationship between the number of discharges (times / second) and an ion concentration ratio (%) in each of the ion generation apparatuses of Concrete Examples 1 and 2. Here, an ion concentration (ions / cm3) obtained when the number of discharges in the ion generation apparatus of Concrete E...

applied example

[0064]FIG. 11 is a perspective view schematically showing a configuration of an air cleaner 40 including the ion generation apparatus shown in FIGS. 1 to 3. FIG. 12 is an exploded view of air cleaner 40 showing the ion generation apparatus placed in air cleaner 40 shown in FIG. 11.

[0065]In FIGS. 11 and 12, air cleaner 40 includes a front panel 41 and a main body 42. An outlet 43 is provided in an upper back portion of main body 42, and purified air containing ions is supplied from outlet 43 into the room. An air inlet 44 is formed at the center of main body 42. Air taken in through air inlet 44 is purified by passing through a filter not shown. The purified air is supplied from outlet 43 through a fan casing 45 to the outside.

[0066]An ion generation apparatus 46 shown in FIGS. 1 to 3 is attached to a portion of fan casing 45 forming a passage for the purified air. Ion generation apparatus 46 is placed to be capable of emitting ions generated at needle electrodes 4 and 5 into air flo...

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PUM

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Abstract

In an ion generation apparatus, an induction electrode for generating positive ions and an induction electrode for generating negative ions are each formed as an independent part and separately mounted on a substrate. Therefore, even if the substrate is warped with changes in temperature, tip end portions of needle electrodes can be positioned at the centers of through holes in the induction electrodes, respectively, and positive ions and negative ions can be stably generated.

Description

TECHNICAL FIELD[0001]The present invention relates to an ion generation apparatus and electric equipment using the same, and particularly to an ion generation apparatus generating positive ions and negative ions, and electric equipment using the same.BACKGROUND ART[0002]Recently, ion generation apparatuses generating both positive ions and negative ions have been put to practical use. FIG. 13 is a perspective view showing a main portion of a conventional ion generation apparatus. In FIG. 13, the ion generation apparatus includes a substrate 51, an induction electrode 52 mounted on a surface of substrate 51, and two needle electrodes 58 and 59.[0003]Induction electrode 52 is formed of one metal plate. Two through holes 54 and 55 are formed in a flat plate portion 53 of induction electrode 52, and a plurality of support portions 56 are formed at a circumferential portion of flat plate portion 53. A substrate insertion portion 57 having a width smaller than that of support portion 56 i...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H01T23/00
CPCH01T23/00H01T19/04
Inventor NISHIDA, HIROMU
Owner SHARP KK